Bookbinding.



G. E. KOEHLER & J. SEYBULD.

BOOKBINDING.

APPLICATION FILED AUG.28, 1915.

Patented Apr. 18, 1916.

2 SHEETS-SHEET l.

INVENTOR5 -A TTORNE Y5,

G. E. KOEHLER & J. SEYBOLD,

' BOOKEiNDiNG. APPLICATION FILED nuazs, 1915.

Patented Apr. 18, 1916.

2 SHEETSSHEET 2.

ores.

GEORGE E. KOEHLER AND JOHN SEYBOLD', OF CHICAGO, ILLINQIS.

BOOKBINDING.

. 4 Application filed August 28, 1915. Serial No. 47,784.

To (1Z6 IO/L077? it may concern lie it known that we, Gnonon E. KoEHLEn and dons Snynom), citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Bookbinding, of which the following is a.

specification.

Our invention relates to the art of bookbinding, and more partlcularlv to the opei ation of sewing together sections or signa tu res of a book.

One of the principal objects of the invention is to provide a satisfactory method of sewing the sections directly one to anothers9 as to do away with the use of cords or hands.

A further object is to accomplish the sewing operation in such manner that the back of the book will be smooth; this object having reference more especially to a tight back binding in which the leather or cloth of the binding is glued or pasted directly to the back of the sewed sections. It is an objection to certain of the prior methods aiming at the elimination of bands, that the edges of the sewed sections are covered with numerous threads which, extending back and forth in all directions and one over the other, cannot be smoothed out so that they do not show through the binding. 1 In a book sewed according to the method to be hereinafter described and claimed, the thread of the stitching is largely between the leaves of the book. There are but a few short threads on the back and these do not overlap each other but extend transversely of the book sothat when the back of the book is filled with glue and shaped for the binding it will present a perfectly smooth surface for the.

leather or cloth of the binding.

A further object of the invention is to provide a stitching for the sections or sig-.

natures obviating the necessity of bands or cords, which will be very strong and durable and at the same time flexible so that the book may be opened out flat easily and without danger of tearing out the stitches.

The invention is illustrated, in a preferred embodiment, in the accompanying drawings wherein Figure 1 is a view, in elevation, of a bench suitable forcarrying on thesewing operation showing a number of the sections or signatures of a book sewed together and another section in the process'of being sewed Specification of Letters Patent.

thereto. Fig. 2 is a plan view of the first section of the book. Fig. 3 is a detail view, in perspective, showing the character of the stltclnng on this section. Fig. 4: is a perspective view showing the second section of the book sewed to the first section. Fig. 5 1s a detail perspective view, with the sections shown in out-line only, illustrating the first stitch which joins the second section to the first section. Fig. 6 is a similar View illustrating one of the other stitches between the first and second sections. Fig. 7 IS a fragmentary perspective of the book completely sewed. Fig. 8 is asection on l ne 8 8 of Fig. 7. Fig. 9 is a perspective view, with the book shown in outline, illustrating the manner in which the third sec- .tion, and each successive section except the last one, is sewed to the preceding sections. Like characters of reference designate likeparts in the several figures of the drawings.

It will be understood that it has been necessary in the drawings to exaggerate the dimensions in certain respects for the purpose of more clearly illustrating the various parts of the book particularly described in the specification. The sections ofthe book have been shown as thicker than they will ordinarily be, the thread heavier and the perforations in the sections larger. In Fig. 7 the complete book is shown as consisting only of five sections. Most books will consist of a considerably larger number of sections.

In carrying out the sewing operation of our invention the sections A, 13,0, D and E are preferably formed with a series of perforations a, b, c, (Z, c, f, g, it, 2' along the back edge of the sections. This operation can be performed with any suitable punching machine. The number will depend upon the size of the book.

While it is perhaps not essential we-prefer before sewing the second section B to the first section A. to stitch section A through the aforesaid perforations with a stitching of the same sort employed for sewing the sections one to the other. This operation is shown in Figs. 2 and 3, The thread X is firstpassed through openinga in section A, brought around the back edge of stitching consistin it will be seen, of a se-' ries of stitches or loops, which extend through the section and around the back edge thereof in a plane substantially at right angles to the length of the book, joined by connecting stitches which will lie within the book and with which said transverse stitches have a looped or knotted engagement.

Figs. 4, 5 and 6 illustrate the manner in which the second section B is sewed to the first section. A fter the last stitch has been made through the perforation 2' in the upper corner of section A. the thread is passed around the back of section B, as indicated 'at 15, down through the perforation i of section B and the perforation i of section A, as shown at 16. around the back of both' sections. as shown at 17, knotted as shown at 18 to the portion of the thread just before it enters the perforation 1. in section B, and then along the upper surface of section B parallel with the back edge thereof, as indicated at 19. to the perforation 9' where the same stitch is repeated (Fig. 6), the. thread being knotted again at the perforation. as shown at '2"). T he thread, it will. be seen, passes by the opening 1 2,. Section E is sewed to section A in this manner through every other perforation until the lower corner of the sections has been reached.

The third section (and the same is true ofv each succeeding section except the last one) is sewed to the preceding sections in the manner shown in the detail in Fig. 9. The

last stitch uniting section B with section A is at the lower corner of the book, that is, through perforation a. After the threadhasbeen knotted or looped around itself adjacent the perforation a in section B, as

dicated at 21, i-t passes around the back edge and C and after being knotted or looped around itself, as shown at carried to the perforation c and so on through alternate perforations, until the upper corner of the book is reached.

While We prefer that the stitches should pass through the perforations of two sections and then out through. the back of the next section below, as described, it will be possible to obtain certain of the advantages of the invention by bri i ring the needle out pletely tnrough sectionsl) and between sections B and A instead of sewing through the back of section A. The factthat the stitching is through alternate perforations makes it possible to spread sections A and B to allow the needle to emerge from between them. t will also be possible to have the stitches pass completely through only one section, that through the perforation in section C, and then out through the back of the section below. However, this would not give as strong and durable a stitching as the preferred method first de scribed.

It will be observed that while the stitching of each section to the next through the intermediate perforations l) to 7b inclusive, is only through every other perforation this method being desirable both asa matter of convenience in sewing and also to give the book niaxiinuni flexibility) each section is sewed to the preceding sections through the end perforations a, 1'. The purpose of this to the sewing strength at the upper and lower corners of the book where strength is required. The stitching through the end perforations takes the place and performs the function'of the ordinary kettle stitching.

The preferred method of sew section is shown in Figs. 'land I I book consists of five sections, as shown, the thread will be at the lower corner of the book after the fourth section, D, has been sewed on. The thread emerging from the back of section B, as indicated at passes around the back of sections C and D. as at 27, is looped or knot-ted to itself in the manner above described, passes around the bark of section E, as at 28, down through perfo ration (L out through the back of section C, around sections 1) and E. as at '29. and after being looped or knotted around itself. as at 30, passes alonq the top of the section at 31, and enters perforations .7) at 32. A stitch is made through perforation 1). as indicated at 33, and then through perforations r]. f,

h and '11, as indicated at 34-. 35. 36 and 3?,

respectively. A return is then made to the lower corner of the book through the alternate perforations, forming stitch 38 through y, 39 through c, and it) through c. The end of the thread then knotted. as shown at i1. to'the portion of the thread forming stitch 98. The stitches in this last? series. 38, 39 and 40. pass through section l) and through the back of the section D. inslcad of passing completely through two sections and out through the hack of the next preceding section as heretofore described. This is merely for convenience in sewing. it. would be dil-iicult to sew section l? coinat the points at which sections l) and t are sewed to each other.

The necessity of illustrating the operai. tions above described somewhat diagramniatically and in a manner which exaggerates certain dimensions will be recognized. For example, the loops or liIlOtS of the thread around itself after each stitch around L actly as it appears in a book and at the same time adequately illustrate the manner in which the sewing operation is accomplished is not feasible.

In Figs. 7 and the book is shown as provided with the usual upper and lower hinge strips 7 and g of muslin or other suitable tough fabric. These strips are sewed in with the upper and. lower sections E, A. respectively.

lit will be seen that our improved stitching eliminates the necessity of cords or hands on the back of the book and at the same time affords a. means of securing the sections together which is very strong and durable. A. book thus sewed is as flexible as can he desired. Each section is secured to the adjacent section or ections by stitches which are in. effect, closed loops or rings. These stitches are not put under any considerable stress when the book is opened sothat it opens easily and there is no danger thatthe stitches will tear out of the paper. A knot is preferably formed as each loop is made so that these loops are, in effect, separate units or hinge rings, as they might be termed. the breaking of one ofwhich does not affect the others. This form of stitching has the advantage that it can be used when the sections consist of single sheets as well as when they are made up of folios one,

within'another. Furthermore, there is very little thread on the back of the book. When the book is formed the few transversely extending threads may be readily flattened down so that these stitches willnot show through or produce unevenness in the back of the binding Most of the threademployed in the stitching lies between the sections instead of on the back.

We claim: y

1. A book comprising a plurality of sections, a stitching comprising closed loops which extend through the sections and around the'back edges thereof, andeennnech ing stitches which lie between the sections with which the aforementioned loops have knotted engagement, respectively.

2. A book comprising a plurality of sections, a stitching comprising closed loops which extend through the sections and around the baclc edges thereof at right angles to the length of the book, and con-.

necting stitches which lie between said sections and parallel to the back edges thereof with which the aforementioned loops have hnotted engagement respectively.

3. A book comprising a plurality of sections. a continuous stitching in which the thread passes through a phn'ality of the leaves of the book, then around the back edge of the same, then around the portion of the thread which passes through the leaves as aforesaid, then along the-back edge of one of the leaves within the book and through said leaves again, and so on in the same manner.

i. A book comprising a plurality of sections which are sewed each to the preceding section at points between the points at which said preceding section is sewed to the section preceding it by means of closed loops extending around the back edges of said sections and connecting'stitches lying between contiguous leaves of the adjacent sections respectively.

A book comprising a plurality of sections which are sewed each to the preceding section by stitches passing in each case completely through two sections and around the back edges thereof at points between the points at which said preceding section is sewed to the section preceding it. A

6. A book comprising a plurality of sections which are sewed each to the preceding section at points between the points at which said preceding section is sewed to the section preceding it by means of a continuous thread engaged with itself at intervals to form loops extending completely through and around the back edges of a' plurality of sections.

7. A book comprising a plurality of sections which are sewed each to' the preceding section by stitches passing through two sections and out through the back of an ad jacent section at points between the points at which said preceding section is sewed to the section preceding it.

8. A book comprising a plurality of sections which are sewed each to the preceding section by stitches passing through two sections and around the back edges thereof at points between the points at which said preceding section is sewed to the section preceding it. said stitches being connected by connecting. stitches which lie betweenthe sections along and adjacent to the back edges thereof.

9. A book comprising a plurality of sections which are sewed each to the preceding section by stitches which pass through the backof another section at points between the points at which said preceding section is sewed to the section preceding it.

10. A book comprising a plurality of sections sewed each to the preceding section by a series of stitches in which the thread passes jacent the place where it enters said sections,

and then along the back edge of one of the sections within the book to the next stitch.

1:2. A book comprising a plurality of sections sewed each to the preceding section by a series of stitches iii which the thread passes through a section and out through the back of another section and around the back edges of said sections.

13. A book comprising a plurality of sections sewed each to the preceding section by a series of stitches in which the thread passes through a section and out through the each of another section and around the back edges of said sections, and around the edge of one of the sections within the book to the next stitch.

14. A book comprising a plurality of sec tions which are sewed each to the preceding section by a series of stitches in which the thread passes throu h a plurality of seetions out through the back of an adjacent section, around the back edges of said sections and along the edge of one of the sections within the book to the next stitch.

15. A book comprising a plurality of sections which are sewed each to the preceding section by a series of stitches in which the thread passes through a plurality of sec I tions out through the back of the adjacent section, around the back edges of said sections, around itself at the point where-the thread enters the sections as aforesaid, and along the edge of one of the-sections within the. hook'to the next-stitch.

16'. A book comprising a plurality of sections which are sewed each to the preceding section by a series'of stitches in which the thread passes through a plurality of sections out through the back of the adjacent scctioin around the back edges of'said sections. around itself at the point where the thre' ad enters the sections as aforesaid, and

along the edge of one of the sections within the book to the next stitch; each section beceding it.

17. A book comprising a plurality of sections which are sewed together by' stitches forming closed loops or rings passing through the sections and around the back edges of the same, each section being sewed to the preceding section at points between the points at which said preceding section is sewed to the section preceding it. I

18. A book comprising a plurality of sections which are sewed together' 'by stitches forming closed loops or rings passing through a plurality of sections. out through the back of another section and around the back edges of said sections.

19. A book comprising a plurality, of sections which are sewed together by/ stitches forming closed loops or rings passing through a section out through the back of another section and around the back edges of said sections.

'20. A book comprising a plurality of secforming through the sections and around the hack edges of the same, the stitches being joined by connecting stitches lying between the sections along the back edges thereof.

21. A book comprising a plurality of sections which are sewed together by stitches forming closed loops or rings passing througha plurality of said sections out through the back of an adjacent section and around the baclc edges of said sections; each section being sewed in this manner to the preceding section at points between the points at which said preceding section is sewed to the section preceding it, and said stitches being connected to the adjacent stitches by connecting stitches which he between the sections adjacent the back edges thereof.

GEO. E. KOEHLER.

JOHN SEYBOLD.

,Vitnesses R. KUEIIN, G. Y. SKINNER.

Joules 02 this patent hearts obtained for five cents each, by addressing the Commissioner of Patents,

' Washinztemllfl." 

